CN102679886A - Method and device for measuring brake down-slide distance of crane - Google Patents
Method and device for measuring brake down-slide distance of crane Download PDFInfo
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- CN102679886A CN102679886A CN201210165751XA CN201210165751A CN102679886A CN 102679886 A CN102679886 A CN 102679886A CN 201210165751X A CN201210165751X A CN 201210165751XA CN 201210165751 A CN201210165751 A CN 201210165751A CN 102679886 A CN102679886 A CN 102679886A
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Abstract
The invention relates to method and device for measuring the brake down-slide distance of a crane. The adopted technical scheme is that a laser distance measuring instrument which is positioned under a rated load is adopted to collect heights (H) from the rated load to the measurement basis of the laser distance measuring instrument during the process of the crane which undergoes uniform declination, uniform deceleration brake and final stop and to transmit the height (H) values to a down-slide distance automatic calculation module; the down-slide distance automatic calculation module can automatically calculate according to the obtained real-time H values to obtain a function of changes of H along with time: H=H(t) and perform derivation on the H(t) function to obtain a function of velocity relative to time: V=V(t); in the function curve of V=V(t), the linear time duration t from the time point at the turning point to the brake stop V=0 serves as the braking action time, and the velocity at the turning point is the initial velocity V of uniform deceleration brake; and the down-slide distance automatic calculation module automatically calculates the brake down-slide distance S according to the uniformly deceleration motion distance formula. The down-slide distance automatic calculation module is connected with a printer to print, if necessary, the data information and function curve diagrams in real time during the whole process.
Description
Technical field
The present invention is a kind of crane brake slide quantity measuring method and device.
Background technology
Crane brake slide amount is an important indicator in the crane safety Performance Detection, in actual production, need the brake slide amount of crane often be detected, to guarantee safety in production.According to national standard,, then need keep in repair crane if the brake slide amount exceeds the scope that standard allows.But existing crane brake slide amount detector structure is formed and is installed and used complicacy, costs an arm and a leg, and can not be widely used.
Number of patent application is 201110203937.5, publication number is the technical scheme of the crane brake slide amount detector of CN102285591, and it has simplified circuit structure to a certain extent, but it still needs a plurality of electronic components, and its circuit structure is more complicated still.
Summary of the invention
The present invention is directed to the deficiency of prior art; Provide a kind of different with prior art measuring method and measuring principle, electronic component uses still less, simple in structure, easy to operate, price is low, install and use the easy crane brake slide quantity measuring method and the technical scheme of device.
The present invention realizes through following technical measures: utilize the laser range finder be arranged under the rated load to gather crane in real time from the uniform velocity dropping to even retarding braking to stopped process rated load to the height H of laser range finder measuring basis and be transferred to the automatic computing module of downslide amount; The automatic computing module of downslide amount can obtain the function H=H (t) of H about the time according to resulting real-time numerical evaluation automatically; And H (t) function carried out differentiate; Obtain the function V=V (t) of speed about the time; Time point from flex point in the function curve of V=V (t) is the braking action time to the straight line time period t that braking stops the V=0; The speed at flex point place is the starting velocity V of even retarding braking, and the automatic computing module of said downslide amount is obtained brake slide amount S according to uniformly retarded motion range formula
automatically.
The further improvement of this detection method also has; The automatic computing module of downslide amount is reported module with display module and/or printing and is connected; Said display module can show the function curve of H=H (t) and the function curve of V=V (t) in real time, and the numerical value that the brake slide amount S that module can print the function curve of the function curve of H=H (t) and V=V (t) and will obtain is automatically reported in said printing prints or the automatic language report.
The invention also discloses a kind of pick-up unit; Comprise the laser range finder and the automatic computing module of the downslide amount that is connected with laser range finder that are placed under the rated load; The automatic computing module of said downslide amount can obtain H and change function H=H (t) in time to the height H numerical value of laser range finder measuring basis according to rated load in the crane decline process of laser range finder collection in real time; To H (t) differentiate automatically, obtain speed and the function V=V of time (t) in the crane decline operational process then; The travelling speed V of crane and the braking time t of braking procedure in the time of can at the uniform velocity be descended according to the velocity function curve, and can obtain brake slide amount S according to uniformly retarded motion range formula
automatically.
The further improvement of this pick-up unit also has, and the automatic computing module of above-mentioned downslide amount also is connected with display module with/printing report module and is connected.
The further improvement of this pick-up unit also has, and the automatic computing module of above-mentioned downslide amount also is connected with display module, and said display module is also reported module with printing and is connected.
Beneficial effect of the present invention is: calculate the brake slide amount according to the physical phenomenon that exists in the object of which movement process, its electronic component uses less, circuit structure is simple, simple to operate, because electronic component has reduced the influence of the time-delay of electronic component in other measuring methods to brake slide measurement amount less simultaneously; Improved accuracy of detection; Reduced crane safety hidden danger more accurately, and its fault is few, precision is high; Simple to operate, long service life.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of the invention.
H=H (t) function curve that the real-time image data of laser range finder obtains among Fig. 2 the present invention.
V=V (t) function curve that Fig. 3 obtains for function curve differentiate among Fig. 2.
Embodiment
For clearly demonstrating the technical characterstic of this programme, through an embodiment, this programme is set forth below.
A kind of crane brake slide quantity measuring method; The laser range finder that utilization is arranged under the rated load is gathered crane in real time from the uniform velocity dropping to even retarding braking to stopped process rated load to the height H of laser range finder measuring basis and through the wired or wireless automatic computing module of downslide amount that is transferred to; The automatic computing module of downslide amount can obtain the time dependent function H=H of H (t) according to resulting real-time numerical evaluation automatically; And H (t) function carried out differentiate; Obtain the function V=V (t) of speed about the time; Time point from flex point in the function curve of V=V (t) is the braking action time to the straight line time period t that braking stops the V=0; The speed at flex point place is the starting velocity V of even retarding braking, and the automatic computing module of said downslide amount is obtained brake slide amount S according to uniformly retarded motion range formula
automatically.Embodied the different H=H (t) of two kinds of braking effects, the function curve diagram of V=V (t) among Fig. 2 Fig. 3 respectively, from Fig. 3, can obviously find out braking effect, the braking distance of solid line is short, good braking effect.
The further improvement of this detection method also has; The automatic computing module of downslide amount is reported module with display module and/or printing and is connected; Said display module can show the function curve of H=H (t) and the function curve of V=V (t) in real time, and the numerical value that the brake slide amount S that module can print the function curve of the function curve of H=H (t) and V=V (t) and will obtain is automatically reported in said printing prints or the automatic language report.According to print result or report numerical value, more directly obtain testing result.
The invention also discloses a kind of pick-up unit; Comprise the laser range finder and the automatic computing module of the downslide amount that is connected with laser range finder that are placed under the rated load; The automatic computing module of said downslide amount can obtain H and change function H=H (t) in time to the height H numerical value of laser range finder measuring basis according to rated load in the crane decline process of laser range finder collection in real time; To H (t) differentiate automatically, obtain speed and the function V=V of time (t) in the crane decline operational process then; The travelling speed V of crane and the braking time t of braking procedure in the time of can at the uniform velocity be descended according to the velocity function curve, and can obtain brake slide amount S according to uniformly retarded motion range formula
automatically.The automatic computing module of downslide amount also be connected with display module with/print to report module to be connected.Perhaps the automatic computing module of downslide amount also is connected with display module, and said display module is also reported module with printing and is connected.
The present invention can pass through or adopt existing techniques in realizing without the technical characterictic of describing; Repeat no more at this; Certainly, above-mentioned explanation is not to be limitation of the present invention, and the present invention also is not limited in above-mentioned giving an example; Variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (5)
1. crane brake slide quantity measuring method; It is characterized in that; Utilization is arranged in laser range finder under the rated load and gathers crane in real time from the uniform velocity dropping to even retarding braking to stopped process rated load to the height H of laser range finder measuring basis and be transferred to the automatic computing module of downslide amount; The automatic computing module of downslide amount can obtain the time dependent function H=H of H (t) according to resulting real-time numerical evaluation automatically; And H (t) function carried out differentiate; Obtain the function V=V (t) of speed about the time; Time point from flex point in the function curve of V=V (t) is the braking action time to the straight line time period t that braking stops the V=0; The speed at flex point place is the starting velocity V of even retarding braking, and the automatic computing module of said downslide amount is obtained brake slide amount S according to uniformly retarded motion range formula
automatically.
2. crane brake slide quantity measuring method according to claim 1; It is characterized in that; The automatic computing module of said downslide amount is reported module with display module and/or printing and is connected; Said display module can show the function curve of H=H (t) and the function curve of V=V (t) in real time, and the numerical value that the brake slide amount S that module can print the function curve of the function curve of H=H (t) and V=V (t) and will obtain is automatically reported in said printing prints or the automatic language report.
3. pick-up unit of realizing the described method of claim 1; It is characterized in that; Comprise the laser range finder and the automatic computing module of the downslide amount that is connected with laser range finder that are placed under the rated load; The automatic computing module of said downslide amount can obtain H and change function H=H (t) in time to the height H numerical value of laser range finder measuring basis according to rated load in the crane decline process of laser range finder collection in real time; To H (t) differentiate automatically, obtain speed and the function V=V of time (t) in the crane decline operational process then; The travelling speed V of crane and the braking time t of braking procedure in the time of can at the uniform velocity be descended according to the velocity function curve, and can obtain brake slide amount S according to uniformly retarded motion range formula
automatically.
4. pick-up unit according to claim 3 is characterized in that, the automatic computing module of said downslide amount also be connected with display module with/print to report module to be connected.
5. pick-up unit according to claim 3 is characterized in that, the automatic computing module of said downslide amount also is connected with display module, and said display module is also reported module with printing and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165751XA CN102679886A (en) | 2012-05-25 | 2012-05-25 | Method and device for measuring brake down-slide distance of crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165751XA CN102679886A (en) | 2012-05-25 | 2012-05-25 | Method and device for measuring brake down-slide distance of crane |
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| CN102679886A true CN102679886A (en) | 2012-09-19 |
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| CN201210165751XA Pending CN102679886A (en) | 2012-05-25 | 2012-05-25 | Method and device for measuring brake down-slide distance of crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245316A (en) * | 2013-05-07 | 2013-08-14 | 福建省特种设备检验研究院 | Crane braking gliding amount detecting system |
| CN105486265A (en) * | 2016-01-19 | 2016-04-13 | 祝凤金 | Crane brake down quantity detector and measurement method thereof |
| CN105486264A (en) * | 2016-01-19 | 2016-04-13 | 孙富亮 | Crane brake down quantity measuring instrument based on acceleration sensor and measuring method thereof |
| CN105653816A (en) * | 2016-01-19 | 2016-06-08 | 贾祥正 | Lift-sliding type parking device motion performance detector and measurement method |
| CN117268620A (en) * | 2023-11-21 | 2023-12-22 | 河南卫华重型机械股份有限公司 | Intelligent detection device for braking moment of crane |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011070656A1 (en) * | 2009-12-09 | 2011-06-16 | Koyama Naoyuki | Distance measuring method and laser distance measuring apparatus |
| CN102285591A (en) * | 2011-07-13 | 2011-12-21 | 祝凤金 | Braking glide quantity detector for crane |
| CN102431896A (en) * | 2011-11-22 | 2012-05-02 | 中联重科股份有限公司 | Method, device and system for detecting load of crane and crane |
-
2012
- 2012-05-25 CN CN201210165751XA patent/CN102679886A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011070656A1 (en) * | 2009-12-09 | 2011-06-16 | Koyama Naoyuki | Distance measuring method and laser distance measuring apparatus |
| CN102285591A (en) * | 2011-07-13 | 2011-12-21 | 祝凤金 | Braking glide quantity detector for crane |
| CN102431896A (en) * | 2011-11-22 | 2012-05-02 | 中联重科股份有限公司 | Method, device and system for detecting load of crane and crane |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245316A (en) * | 2013-05-07 | 2013-08-14 | 福建省特种设备检验研究院 | Crane braking gliding amount detecting system |
| CN103245316B (en) * | 2013-05-07 | 2016-03-23 | 福建省特种设备检验研究院 | A kind of crane brake downslide amount detection system |
| CN105486265A (en) * | 2016-01-19 | 2016-04-13 | 祝凤金 | Crane brake down quantity detector and measurement method thereof |
| CN105486264A (en) * | 2016-01-19 | 2016-04-13 | 孙富亮 | Crane brake down quantity measuring instrument based on acceleration sensor and measuring method thereof |
| CN105653816A (en) * | 2016-01-19 | 2016-06-08 | 贾祥正 | Lift-sliding type parking device motion performance detector and measurement method |
| CN105486265B (en) * | 2016-01-19 | 2018-06-08 | 菏泽学院 | Brake glide quantity detector of crane and its measuring method |
| CN105653816B (en) * | 2016-01-19 | 2018-11-09 | 菏泽市特种设备协会 | Lifting cross sliding type parking equipment movenent performance detector and measurement method |
| CN117268620A (en) * | 2023-11-21 | 2023-12-22 | 河南卫华重型机械股份有限公司 | Intelligent detection device for braking moment of crane |
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Application publication date: 20120919 |